The 'That Seals The Deal. I Am No Longer A Fan' meme is a popular 'copypasta' frequently used on Twitter (X) and Reddit, particularly within the sports and gaming communities. It features a user feigning extreme outrage after a loss or a controversial decision, listing absurd actions like moving to another country or cancelling a lifelong membership. Originating as a satirical way to mock 'fair-weather fans,' the text has become a staple for trolling team accounts. Its humor lies in its repetitive, overly dramatic structure, making it the perfect template for anyone looking to make a sarcastic exit from a fandom.